(ik it's a little crazy but it's just my fantasy)

Tsukasa Tenma, a man who died a few years ago but no one knew about it except Rui, his husband. the man didn't explain Tsukasa's sudden disappearance to anyone because he had a plan.

Rui was a chemist, so he decided to bring Tsukasa back to life by some potions. He was laying in a special coffin so that Rui could see him.

"darling~" Rui entered the place where Tsukasa was lying. he had a potion in his hand.